Add pi-browser-harness ext (vendored 0.11.0, sharp dropped)

extensions/pi-browser-harness/src/daemon/index.ts

@@ -0,0 +1,86 @@
+import { createIpcServer } from "./server";
+import { createCdpBridge, type SendToClient } from "./bridge";
+import { DAEMON_IDLE_TIMEOUT_MS } from "./protocol";
+
+async function main() {
+  console.log("[pi-browser-daemon] Starting...");
+
+  const ipcServer = createIpcServer();
+  const cdpBridge = createCdpBridge();
+
+  ipcServer.onMessage((msg, client) => {
+    if (msg.type !== "request") return;
+
+    const send: SendToClient = (cid, resp) => {
+      ipcServer.send(cid, resp);
+    };
+
+    cdpBridge.handleRequest(msg, client.id, send);
+  });
+
+  cdpBridge.onEvent((event, targetClientIds) => {
+    for (const cid of targetClientIds) {
+      ipcServer.send(cid, event);
+    }
+  });
+
+  ipcServer.onDisconnect((client) => {
+    cdpBridge.removeClient(client.id);
+  });
+
+  cdpBridge.onClose(() => {
+    console.log("[pi-browser-daemon] Chrome disconnected");
+    ipcServer.broadcast({
+      type: "control",
+      action: "shutdown",
+      reason: "chrome_disconnected",
+    });
+  });
+
+  let idleTimer: ReturnType<typeof setTimeout> | null = null;
+
+  const resetIdleTimer = (): void => {
+    if (idleTimer) clearTimeout(idleTimer);
+    if (ipcServer.clientCount() === 0) {
+      idleTimer = setTimeout(() => {
+        console.log("[pi-browser-daemon] Idle timeout — no clients for " +
+          `${DAEMON_IDLE_TIMEOUT_MS / 60000} minutes. Shutting down.`);
+        shutdown();
+      }, DAEMON_IDLE_TIMEOUT_MS);
+    }
+  };
+
+  const cancelIdleTimer = (): void => {
+    if (idleTimer) { clearTimeout(idleTimer); idleTimer = null; }
+  };
+
+  ipcServer.onConnect(() => { cancelIdleTimer(); });
+  ipcServer.onDisconnect(() => { resetIdleTimer(); });
+
+  try {
+    await ipcServer.start();
+    console.log("[pi-browser-daemon] IPC server listening");
+  } catch (e) {
+    console.error("[pi-browser-daemon] Failed to start IPC server:", e);
+    process.exit(1);
+  }
+
+  await cdpBridge.start();
+
+  resetIdleTimer();
+
+  const shutdown = async () => {
+    console.log("[pi-browser-daemon] Shutting down...");
+    await cdpBridge.stop();
+    await ipcServer.stop();
+    process.exit(0);
+  };
+
+  process.on("SIGINT", shutdown);
+  process.on("SIGTERM", shutdown);
+}
+
+main().catch((e) => {
+  console.error("[pi-browser-daemon] Fatal:", e);
+  process.exit(1);
+});